new lualatex package showhyphens (13sep11)

git-svn-id: svn://tug.org/texlive/trunk@23937 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 43 insertions, 0 deletions

diff --git a/Master/texmf-dist/tex/lualatex/showhyphens/showhyphens.sty b/Master/texmf-dist/tex/lualatex/showhyphens/showhyphens.sty
new file mode 100644
index 00000000000..849164d8b10
--- /dev/null
+++ b/Master/texmf-dist/tex/lualatex/showhyphens/showhyphens.sty
@@ -0,0 +1,43 @@
+\ProvidesPackage{showhyphens}[2011/09/12 v0.1 Show hyphenation points (PGU)]
+\RequirePackage{ifluatex,luatexbase}
+% License: MIT style license
+
+% Copyright (c) 2011 Patrick Gundlach patrick@gundla.ch
+
+% Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the
+% "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge,
+% publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do
+% so, subject to the following conditions:
+% 
+% The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+% 
+% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+% MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+% FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+% WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+\ifluatex
+\directlua{
+show_hyph = function(head)
+  while head do
+    if head.id == 0 or head.id == 1 then % hlist, vlist
+      show_hyph(head.head)
+    elseif head.id == 7 then             % disc
+      local n = node.new("whatsit","pdf_literal")
+      n.mode = 0
+      n.data = "q 1 0 0 RG  0.3 w 0 2 m 0 7 l S Q"
+      n.next = head.next
+      n.prev = head
+      head.next = n
+      head = n
+    end
+  head = head.next
+  end
+  return true
+end
+luatexbase.add_to_callback("post_linebreak_filter",show_hyph,"show_hyph")
+}
+\else
+\errhelp{Please use LuaLaTeX when you require the package 'showhyphens'}
+\errmessage{Package showhyphens error: This works only with LuaLaTeX!}
+\fi